<template>
  <div>
    <div class="search">
      <input class="search-input" type="text" placeholder="输入城市名或拼音" v-model="keyword">
    </div> 
    <div class="search-content" ref="search" v-show="keyword">
      <ul>
        <li class="search-item border-bottom" 
            v-for="item of list" 
            :key="item.id" 
            @click="handleCityClick(item.name)"
        >{{item.name}}</li>
        <li class="search-item border-bottom" v-show="hasNoData">
          没有找到匹配数据
        </li>
      </ul>
    </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll'
import {mapMutations} from 'vuex'
export default {
  name: "CitySearch",
  props: {
    cities:Object
  },
  data () {
    return {
      keyword: '',
      list: [],
      timer:null
    }
  },
  computed: {
    hasNoData () {
      return !this.list.length
    }
  },
  watch: {
    keyword () {
      if(this.timer) {
        clearTimeout(this.timer)
      }
      if (!this.keyword) {
        this.list = []
        return 
      }
      this.timer = setTimeout(()=>{
        const result = []
        for (let i in this.cities){
          this.cities[i].forEach((value) => {
            if (value.spell.indexOf(this.keyword) > -1 ||value.name.indexOf(this.keyword) > -1) {
              result.push(value)
            }
          })
        }
        this.list = result
      },100)
    }
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.search)
  },
  methods: {
     handleCityClick (city) {
          this.changeCity(city)
          this.$router.push('/')
      },
      ...mapMutations(['changeCity'])
  }
}
</script>
<style lang="stylus" scoped>
@import '~styles/varibles.styl'
.search
  height .72rem
  padding 0 .1rem
  background $bgColor
  .search-input
      height .62rem
      line-height .62rem
      width 100%
      text-align center
      border-radius .06rem
      color #666
      padding 0 .1rem
      box-sizing border-box
.search-content
  overflow hidden
  position absolute
  top 1.58rem
  left 0
  right 0
  bottom 0
  background #eee
  z-index 1 
  .search-item
    line-height .62rem
    padding-left .2rem
    color #666
    background-color #fff

</style>
